
Allicdata Part #: | 2SC4915-OLFTR-ND |
Manufacturer Part#: |
2SC4915-O,LF |
Price: | $ 0.08 |
Product Category: | Discrete Semiconductor Products |
Manufacturer: | Toshiba Semiconductor and Storage |
Short Description: | TRANS RF NPN 30V 550MHZ SSM |
More Detail: | RF Transistor NPN 30V 20mA 550MHz 100mW Surface Mo... |
DataSheet: | ![]() |
Quantity: | 1000 |
3000 +: | $ 0.06691 |
6000 +: | $ 0.06319 |
15000 +: | $ 0.05761 |
30000 +: | $ 0.05390 |
75000 +: | $ 0.04832 |
Series: | -- |
Packaging: | Tape & Reel (TR) |
Part Status: | Active |
Transistor Type: | NPN |
Voltage - Collector Emitter Breakdown (Max): | 30V |
Frequency - Transition: | 550MHz |
Noise Figure (dB Typ @ f): | 2.3dB ~ 5dB @ 100MHz |
Gain: | 17dB ~ 23dB |
Power - Max: | 100mW |
DC Current Gain (hFE) (Min) @ Ic, Vce: | 70 @ 1mA, 6V |
Current - Collector (Ic) (Max): | 20mA |
Operating Temperature: | 125°C (TJ) |
Mounting Type: | Surface Mount |
Package / Case: | SC-75, SOT-416 |
Supplier Device Package: | SSM |
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The 2SC4915-O,LF is a type of Bipolar Junction Transistor (BJT) and belongs to the category of Radio Frequency Transistors (RF). The device has a variety of applications with mobile phones, satellite digital receiver systems and medical equipment, among others. In this article we will take a look at the application field and working principle of this device.
The 2SC4915-O,LF is a NPN transistor, which consists of three layers of semiconductor material: the base (B), the collector (C) and the emitter (E). NPN transistors, such as the 2SC4915-O,LF, conduct current from their collector to their emitter when their base receives a positive voltage. This is the reason why the device is most commonly used as an amplifier, due to its current gain or amplification factor (α). The current gain, also known as the common-emitter current gain, is usually very high when the DC current gain (βdc) of the device is high, which is the case with 2SC4915-O,LF. Furthermore, due to its low noise figure (NF) it is often used in low noise applications.
As mentioned earlier, the 2SC4915-O,LF is mostly used as an amplifier, but it can also be used as an oscillator. Oscillators are devices which use a feedback mechanism to produce a periodic signal, such as an AC voltage or a pulse. The 2SC4915-O,LF can be used as an oscillator by connecting the collector to the base and adding a feedback capacitance to the emitter. This will cause the current gain (α) of the device to decrease, which in turn increases the frequency of the oscillation.
In addition to amplification and oscillation, the 2SC4915-O,LF can also be used for switching applications. When the voltage applied to the base of the device is high enough, the device will switch on and current will flow from the collector to the emitter. This type of application is useful when precise switching is required, such as in digital circuits.
The 2SC4915-O,LF is also used in applications which require a fast switching speed or a high slew rate. A slew rate is a measure of how fast a transistor can transition from off to on, or on to off, in a given amount of time. The 2SC4915-O,LF has a very high slew rate, meaning that it can make this transition very quickly, making it ideal for applications where speed is critical.
In conclusion, the 2SC4915-O,LF is a type of NPN transistor which belongs to the category of Radio Frequency Transistors (RF). It can be used as an amplifier, an oscillator or a switch, and its high current gain, low noise figure and high slew rate make it ideal for a variety of applications in mobile phones, satellite digital receiver systems and medical equipment, among others.
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